Method Of Finishing The Signal Cable End(Dyc); For Vortex Flowmeter (Dy-N) - YOKOGAWA DY025 User Manual

3.6 Method of Finishing the Signal Cable End(DYC)

3.6.1 For Vortex Flowmeter (DY-N)

1 Strip off the outer polyethylene jacket, outer braided
shield and inner jacket, and inner braided shield as
per the dimensions below.
2 Strip off the black conductive layer convering two
wires completely, as per the dimensions below.
Twist each of the conductor and drain wires so that
there are no free strands.
3 Do not short-circuit the conductive layer and the
terminals (A, B, C and T).
4 Strip off about 5 mm (0.2 in.) of insulation for each
of wires A, B, and T, and twist the strands of each
wire. Twist the inner and outer drain wires together.
5 Slide FEP (fluorinated ethylene propylene) tubing
over the twisted inner and outer drain wires C until
the tubing cannot be slid any further, and then cut
off the tubing leaving 5 mm (0.2 in.) of the stranded
drain wires exposed.
6 Slide heat shrinkable tubing over the cable end so
that the tubing covers the braided shield and
overlaps both the polyethylene jacket and loose
wires A, B, C, and T.
7 Slide a short piece of heat shrinkable tubing over
each of wires A, B, C, and T. Install a crimp-on
terminal lug at the tip of each wire. Crimp and
solder each lug.
8 Slide each short piece of heat shrinkable tubing
over the crimp sleeve. Heat all pieces of heat
shrinkable tubing with a heat blower or dryer.
9 Attach an identification label to the end of the cable.
NOTE
Check that the insulation resistance between each
wire including the inner shield is 10MΩ or greater at
500V DC. Ensure that both ends of the wires are
disconnected (open-circuited) during the check.
(*1): Only for /MV
80
BLACK (C)
5 5 10
WHITE (B)
3MAX
120
RED (A)
Yellow(T) 50
60
70
Figure 3.7
Description
NOTE
Unit : mm
In case that the cable end finish
parts assembly is necessary
after delivery, contact your
nearest Yokogawa sales office
or the sales representative from
which you purchased the
F030601.EPS
product.
5 (0.2) 10 (0.4)
5 (0.2)
90 (3.5)
Black Conductive Layer
T (yellow)
40 (1.6) 5 (0.2)
T (Yellow)
3 (0.1)
or less
A (Red)
50 (2.0)
60 (2.4)
Drain wires
C
A (Red)
5 (0.2)
B (White)
5 (0.2)
5 (0.2)
5 (0.2)
C
C
Crimp and Solder Here
Lug tip
Heat Shrinkable Tubing
10
Heat Shrinkable Tubing
Do not touch the '' conductive layer"
(black area covering the signal cables A
and B) to the converter case, terminal,
and other leadwires. If it is touched,
operation of the converter may be
incorrect. When the cable is terminated,
remove the conductive layer properly.
3-5
Figure
Unit : mm
(approx. inches)
Black Conductive Layer
B (White)
T (Yellow)
FEP Insulation Tubing
(Black)
T (Yellow)
A (Red)
B (White)
Heat Shrinkable Tubing
T (Yellow)
A (Red)
B (White)
T030601.EPS
CAUTION
IM 01F06A00-01E
3. WIRING